Hyperlink is a call to action.
Provide meaningful link text.
Note: Since screen reader users know the presence of a link and typically do not use a mouse, avoid using "Link to…", "Click here", or "Click on this link" to indicate a link. Other non-informative link phrases to avoid are: "Here", "More", "Read more", "Learn more", "Info"...
Image Link must have a meaningful Alt text.
Alt text of an image link is read by screen readers, same as meaningful link text.
Empty link should be removed.
Usually, empty links are left-over links in the code. Since an empty link has no link text, it is invisible on the page and can only be removed in the HTML code view.
Hyperlinks must be differentiated from rest of the text.
After inserting a hyperlink, make sure the hyperlink text is differentiated from the rest of the text. Making the text Bold or underlined are some of the ways to make the hyperlink stand out.